Magnesium Ascorbyl Phosphate – MAP
Magnesium Ascorbyl Phosphate is a stable, water-soluble derivative of Vitamin C (L-Ascorbic acid mono-dihydrogen phosphate magnesium salt). Unlike L-Ascorbic Acid, it does not readily degrade in formulas containing water.
Magnesium Ascorbyl Phosphate is a stable, water-soluble derivative of Vitamin C (L-Ascorbic acid mono-dihydrogen phosphate magnesium salt). Unlike L-Ascorbic Acid, it does not readily degrade in formulas containing water. It is considered light-stable and oxygen-stable. Studies of MAP in aqueous solutions indicate it retains over 95% of its potency at 40°C without any pH adjustment.
By inhibiting tyrosinase activity, MAP is capable of suppressing skin pigmentation, making it effective in whitening dark skin, or areas of dark skin. It should be noted, one study indicated it might be needed at a concentration of 10% to be effective at inhibiting melanin production.
Unlike Ascorbyl Palmitate, Magnesium Ascorbyl Phosphate (MAP) appears to have the same potential to boost skin collagen synthesis as does Ascorbic Acid, but at lower concentrations. For those with sensitive skin or those wanting to avoid the exfoliating effects of highly acidic Ascorbic Acid, MAP may be the preferred choice.
Magnesium Ascorbyl Phosphate Applications
- Suncare and after-sun products
- Makeup products
- Skin lightening products
- Anti-aging products
- Creams and lotions
Inci: Magnesium Ascorbyl Phosphate (MAP)
Appearance: white to off-white powder
pH: 7.0 – 8.5
Stability: Magnesium Ascorbyl Phosphate (MAP) may discolor in formulations with a pH below 6, so is best used in products with a final formulation pH between 6.5– 7.0.
Formulations with MAP should contain Disodium EDTA 0.05% due to metal ion impurity in the formula, This Can affect the stability of Magnesium Ascorbyl Phosphate (MAP) available.
Recommended Usage rate: 2 to 5%
Solubility: water, heated to 40°C (104°F). Add products to water one at a time – sprinkle small amounts at a time
Storage: Cool, dry place. Do not freeze. Keep away from light and moisture!
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